OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application) G' I2 b/ ?; v/ M% Z, u9 Y4 T
/*5 ]! p3 D; X, s# B/ D: L6 Y
* edma_test.c2 a# p/ S5 l* |2 Y3 O( v# [
*
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* brief EDMA3 Test Application3 N+ f0 n* ]8 G% u
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* This file contains EDMA3 Test code.8 P. r* T! X2 Q: h5 u1 @5 ?
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE; e) Z* v/ B$ j7 h; \" y
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.8 S" }9 f9 M- ]! O1 q9 ~
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/" \4 P7 X) @ c/ S" S& f
*
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* This program is free software; you can redistribute it and/or' n3 t3 }3 O; N- ~1 q. K1 F5 ^$ ^
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*/ q% {- `. H+ B' S5 ?0 Q5 `8 a
* This program is distributed "as is" WITHOUT ANY WARRANTY of any/ x! l! l/ ~% r# N* L+ s+ y' C
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the/ i: L7 E) r: X) Q
* GNU General Public License for more details.4 r# @( K/ f1 g$ @; f* X- `
*/
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#include <linux/module.h>
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#include <linux/init.h>+ u! h: p+ F' c7 T; g
#include <linux/errno.h> M7 p8 k! i# m3 |. w
#include <linux/types.h>
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#include <linux/interrupt.h>$ t% f& |+ L0 R q
#include <asm/io.h>3 }6 P" u$ W" {) ?9 m* R
#include <linux/moduleparam.h>0 d: G0 l2 {" O% R; E3 A/ q
#include <linux/sysctl.h>
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#include <linux/mm.h> a- e2 i- J3 [, R+ b8 Y
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>9 l r) O$ j0 p9 x+ H) V9 q3 i
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>: r# ] B" B3 N; c5 Z
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#undef EDMA3_DEBUG5 b2 @0 N% z, l }8 O
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)& i, e, B2 _1 w8 q% L" b5 o9 Q
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )% s0 q6 t' K9 {0 F6 H/ W
#define DMA_FN_IN5 m. @5 J% O) A# Q% S3 Z/ H; L6 l
#define DMA_FN_OUT1 s2 W0 l1 I5 j Y6 T
#endif! [9 {0 a4 W+ K0 h
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)6 {2 u* s* R% M6 @% S3 i
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20( w8 t, a. v+ x1 @2 \# w7 C
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22% \. d! V) g; U) ]: G
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;9 d6 Z, j2 o( \) ?- I/ K {
static volatile int irqraised2 = 0;4 ]0 U7 J2 t: {- J6 E1 u
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) Y6 j* R0 J, f& o
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) X3 e4 I) N' U
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dma_addr_t dmaphyssrc1 = 0;1 v A& z9 f9 q$ E* E
dma_addr_t dmaphyssrc2 = 0; v: P9 F- L5 ?. R8 P& ^- C
dma_addr_t dmaphysdest1 = 0;+ x+ c. ~& v) O
dma_addr_t dmaphysdest2 = 0;% {/ |. T. Z/ R/ t. t: ^6 I
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char *dmabufsrc1 = NULL; e* C D& ^ _8 S( j- }
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;* b/ Q) } D0 P* M( e1 _' _$ p
static int bcnt = 8;0 T& T. m5 a6 H+ m: h+ Q; u* m
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);! o9 e' Y7 x7 I. c9 j& X
module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动